Tubular Fuse Tester, 24V Maximum, Test Automotive, Glass Tube, & Ferrule Fuses Up To 1-7/8" Length, Batteries Are Included & Replaceable, Sliding Probe To Appropriate Fuse Length, Not For Use For Electrical Fuses In The Fuse Panel, Dimensions: 5.50"L x 2.75"W x 0.88"H Carded.